This page contains a Flash digital edition of a book.
Spotlight on …

Feed Production Machinery


PUMPS Albany long life molasses pumps can be used on blackstrap and on low viscosity blends of molasses. Low speed, high torque designs handle a wide range of viscosities. Our FF nylon cased 2” pump gives good results on acidic molasses. Capacities from 1 to 250 litres/min are provided for from a number of iron and nylon models. For fats pumping Albany use heated ni-resist cased pumps which

due to high nickel content and hardness give excellent life. These ceramic sealed pumps handle all vegetable and acid palm oils. Our FF nylon cased pump delivers up to 150 l/min and is a low cost unheated option which is hygienic and very acid resistant. Albany’s FF pumps are available from – Charlie Stevenson on telephone no. 07990 521 793 The Albany Engineering Co Ltd Church Road, Lydney, GLOS GL15 5EQ Tel: +44 (0) 1594 842275

Fax: +44 (0) 1594 842574


A rotating cutter was designed, meant to cut the product strands

leaving the die to uniform pellet lengths. So the ‘Crown Expander’ was born. The machine owes its name to the crown form of the first dies which were provided with slits instead of bores. One important component of the annular gap expander remained


WITHOUT A PELLETING PRESS Our customers operate more than 600 expanders worldwide. In the U.S.A. for example, turkey fattening feed is expanded before pelleting in most cases. The annular gap expander has proved to be a good solution also in other fields such as starch modification or the oilseeds- processing industry. And last but not least, we have developed our Kahl extruder on

the basis of the expander. With the extruder even higher mechanical energy inputs and modification degrees can be realised, and the products – fish feed, petfood, and snacks – can be pelleted or given other defined shapes. For quite some time, there has been a clear


unchanged in the Crown expander: The hydraulically moveable cone. This cone can be moved into and out of the crown die at the outlet end. Depending on the position of the cone in the die, more or less die bores are open for the production of pellets. Thus the pelleting process is easy to control by simply varying the cone position – in contrast to conventional extrusion processes which require die changes or far more complicated control mechanisms. The results obtained so far, have met every expectation, which

means that we succeeded in the proverbial ‘squaring of the circle’: The Crown expander produces pellets or other regularly shaped structures while preserving coarse particles and simultaneously agglomerating fine and finest components. The positive nutritional effect of expansion is an additional advantage which traditional pelleting does not offer. The crown expander – an ideal example of a successful further

development taking into account aspects of animal nutrition and process technology. Contact: www.

tendency towards coarse grinding of feed. Amandus Kahl remembered that in the annular gap expander,

coarse grinding structures remain largely unchanged, although the product is exposed to a strong pressure and kneading effect. The pressure load in the expander acts on all sides of the coarse

particles. The homogeneous pressure distribution on the entire particle circumference is supported by embedding these coarse particles in a pasty moist matrix of fine particles. Another advantage lies in the fact that the finer particles are

agglomerated during expansion and thus are transformed into coarse structures. It occurred to our engineers that they might equip the expander outlet with an annular die similar to that of a pelleting press. A die without pan grinder rollers to be more precise, as they wondered: Should the high internal pressure of the expander not be able to press the finished product right through the round or oblong bores in the die ring, thus making the pressing and crushing effect of pan grinder rollers superfluous?

Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52